Corroding-pot



H. M. GABEL.

GORRODING POT.

(No Model.)

No. 537,029. Patented Apr. 9, 1895.

Z Y swam cf m wA M. W W 2U Q 2 Witnesses:

- HUNETE STATES PATENT FFIQE.

HENRY MNGABEL, OF CINCINNATI, OHIO.

CORRODlNG-POT.

SPECIFICATION forming part of Letters Patent No. 537,029, dated April 9,1895.

Application filed December 1'7, 1894. Serial No. 532,025. (No model.)

To all whom it may concern:

Be it known that I, HENRY M. GABEL, of Avondale, (Oincinnati,) Hamiltoncounty, Ohio, have invented certain new and useful Improvements inCorroding-Pots, of which the following is a specification.

This invention pertains to improvements in corroding pots for use in themanufacture of white lead.

In ordinary eorroding pots the pots are very apt to come in contact witheach other sidewise and thus interfere with circulation between them,the result being the defective working of a portion of the corrodinghouse. If the pots be spaced apart sidewise in order to securecirculation much special care in setting is required. Again, with theusual pots, the boards placed over their tops to receive the succeedinghot-bed and pots, virtually closes the tops of the pots and preventscirculation through the pots. The use of f urring timbers to keep theboards away from the tops of the pots involves additional expense formaterial and labor and concentrates the pressure on the pots and resultsin serious breakage. Again, with ordinary pots, with closed bottoms, thecirculation through the lead within the pots can only take place throughthe apertures formedin the side walls of the pots, which circulation isanything but free, and the perforations weaken the pots.

Again, in ordinary pots, the form of the bot-' toms is such that whenthey are placed upon the hot-beds they so compact and solidify thematerial ofthe hot-beds as to interfere with proper circulation throughthe material of the beds.

I improve corroding pots in all the respects mentioned, and myimprovements will be readily understood from the following descriptiontaken in connection with the accompany drawings, in which-- Figure 1, isa plan of acorroding pot exemplifying my invention; and Fig. 2, is avertical diametrical section of the same.

In the drawings, 1, indicates the body-wall the opening 3; 5, theannular acid cup whose inner wall is formed by the flange 4 6, notchesin the top of flange 4, forming overflows for the acid and forming alsocirculation openings under the lowermost lead buckle in the pot; 7, abelt-like enlargment at the base of the pot; 8, exterior overflow fromthe acid cup; 9, notches in the rim of the pot, and 10, projectionsformed by the unsuppressed portions of the rimof the pot.

The pots are to be constructed of the usual material and of about theusual dimensions and are to be set upon the hot-bed as usual. Theextended bottom of the pot gives a large supporting area upon thehot-bed and that portion of the hot-bed immediately below the opening 3will be substantially free from compression and therefore left open andporous. The extended bottomsof the pots give them a large steadyingbase-support upon the yielding hot-bed. The projection of the belt 7permits the pots to be set in contact with each other and still insuresfree and liberal spaces for circulation along the sides and entirelyaround the bodies of the pots, being impossible for the body-walls ofthe pots to come in' contact with each other and shut off thecirculation passages. The lowermost series of pots having been set andcharged with acid, as usual, they are properly filled with lead. Theusual boards are then placed over the pots to receive the succeedinghot-bed and series of pets, &c., as usual. The boards aresupported bythe projections 10 between which there is ample circulation space formedby the notches 9 leading 'to the space over the lead contained withinthe pot. The opening 3 gives 'free circulation up through the pot to thelead, there thus being free circulation around the pots and up throughthe lead in the pots,.and that portion of thehot-bed below the center ofthe mass of lead in the. pot is the bodies of neighboring pots,substantially as set forth.

2. A ventilating corroding pot having an inthe contents of the potthrough the surroundterior acid-cup having projections upon its ingacid, substantially as set forth. rim and provided with a perforatedbottom to 4. A ventilating corroding pot provided permit of circulationdirectly upward from a withabottom having a perforation margined I 5 5supporting hot-bed to the contents of the pot, by an upstanding flangeforming an inner rim substantially as set forth. for an acid-cup and asupport; for the metallic 3. A ventilating oorroding pot having anincontents of the pot, substantially as set forth. terior annularacid-cu p having projections HENRY M. GABEL. upon its rim and providedwith a central per- \Vitnesses: IO foration in its bottom to permit ofcirculation BERT L. BALDWIN, directly upward from asupporting hot-bed toa G. W. SIMPKINSON.

